Who's to blame for our defense?

Tully is why the defense sucks

He is slow and hits like a little girl. I showed my son four times where he either misses the tackle or completely runs away from the play. He can't run with anybody on the field he's just slow...check Madden lol...Now he runs into the middle of the offense on the sweep for the TD which is why they got in untouched. He can't see the play nor understand what the other team is doing. Have you ever seen him hit someone hard?? I never have because he hasn't. He is a Titan because he has a cheap contract and his play shows why. He is a backup on any other team but this one. Hes too slow and short to be a lb which is why the middle will forever be open...